Bellows pump system

Abstract

A simplified pump system may include a bellow having a suction valve, a stem, and a fluid lock wherein the product flow into and out of a pump chamber formed by the bellow and stem is controlled by the suction valve and fluid lock.

What is claimed is: 
     
       1. A pump system, comprising:
 a base; 
 an opening in the base; 
 a bellow resting on the base, the bellow comprising a suction valve and an upper lip; 
 a stem comprising a top portion seated on the upper lip of the bellow, a neck extending through the suction valve, and an end portion extending through the opening in the base; 
 a fluid lock attached to the end portion extending through the opening in the base; and 
 a tube connected to the base. 
 
     
     
       2. A pump system, comprising:
 a base; 
 an opening in the base;
 a bellow comprising a suction valve and an upper lip; 
 a stem comprising a top portion, a neck, and an end portion, wherein the top portion is configured to seat next to the upper lip of the bellow, the neck extends through the suction valve, and the end portion extends through the opening in the base; and 
 
 a guide in communication with the bellow. 
 
     
     
       3. The pump system of  claim 2 , further comprising a container connected to the base. 
     
     
       4. The pump system of  claim 3 , wherein the container further comprises a container selected from the group consisting of a bottle, an airless bottle, a bag and a tube. 
     
     
       5. The pump system of  claim 2 , wherein the bellow comprises a material selected from the group consisting of silicon, TPE, TPU, and an elastomer. 
     
     
       6. The pump system of  claim 2 , further comprising a pump head. 
     
     
       7. The pump system of  claim 2 , further comprising an attachment mechanism. 
     
     
       8. The pump system of  claim 2 , further comprising a dip tube. 
     
     
       9. The pump system of  claim 2 , wherein the guide comprises a pump head. 
     
     
       10. The pump system of  claim 2 , further comprising a fluid lock attached to the end portion of the stem. 
     
     
       11. The pump system of  claim 2 , further comprising a tube connected to the base. 
     
     
       12. The pump system of  claim 2 , further comprising a container selected from the group consisting of a tube, bag, airless bottle, and bottle attached to the base.